A US woman who shot and killed her husband and two adult children before taking her own life is thought to have committed the shocking crime as a result of being ostracised from the religion she was raised in.

Every time I tell a mate I’m doing a story on cryptocurrency, they invariably ask me the same two questions: should they invest their own hard-earned money, and which cryptocurrency will get them a Lamborghini/yacht/island quickest?

Possible MH370 debris on Pemba Island

A piece of aircraft debris found on an island off the coast of Tanzania is being investigated as possibly being from missing flight MH370.

Transport Minister Darren Chester said the Australian Transport Safety Bureau was seeking further information on the item, which was discovered on Pemba Island.

Several pieces of debris that authorities say are almost certainly from the plane have been recovered during the past year on the shorelines of South Africa, Mozambique, and Rodrigues and Reunion islands.

American lawyer Blaine Gibson, who previously found debris in Mozambique, has also reported discovering more objects in Madagascar, including personal items such as hand luggage.

The Malaysia Airlines flight, a Boeing 777, disappeared in March 2014 with 239 people on board and is believed to have crashed in the southern Indian Ocean.

Possible aircraft debris found on South Australia's Kangaroo Island was this week ruled out as being from MH370 as it was not consistent with the manufacturing specifications of a Boeing commercial aircraft.

Also this week, senior aviation officials from Australia, Malaysia and China met in Kuala Lumpur to discuss the future of the search ahead of a final ministerial-level meeting after the July 2 federal election.